//需要修改的目标日期对象
var mm_obj;
var mm_curday;
var mm_today;
var mm_months = new Array("一月", "二月", "三月", "四月", "五月", "六月", "七月", "八月", "九月", "十月", "十一月", "十二月");  
var mm_daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);  
/*var mm_days = new Array("Sunday", "Monday", "Tuesday",  "Wednesday", "Thursday", "Friday", "Saturday");*/  
var mm_days = new Array("日","一", "二", "三",  "四", "五", "六");  

var formName;
//得到某月的天数
function getDays(month, year) {  
if (1 == month)  
return ((0 == year % 4) && (0 != (year % 100))) ||  
(0 == year % 400) ? 29 : 28;  
else  
return mm_daysInMonth[month];  
}  

//得到今天的年,月,日 
function getToday() {  
this.now = new Date();
this.year = this.now.getFullYear();  
this.month = this.now.getMonth();  
this.day = this.now.getDate();  
}  

mm_today = new getToday(); 
mm_curday = new Date();

function newCalendar() {  
mm_today = new getToday();  
var parseYear = parseInt(document.all.mm_year[document.all.mm_year.selectedIndex].text);  
var newCal = new Date(parseYear, document.all.mm_month.selectedIndex, 1); 
var day = -1;  
var startDay = newCal.getDay();  
var daily = 0;  
if ((mm_today.year == newCal.getFullYear()) &&(mm_today.month == newCal.getMonth()))  
day = mm_today.day;  

var tableCal = document.all.calendar.tBodies.dayList;  
var intDaysInMonth =getDays(newCal.getMonth(), newCal.getFullYear());  
for (var intWeek = 0; intWeek < tableCal.rows.length;intWeek++) 
for (var intDay = 0;intDay < tableCal.rows[intWeek].cells.length;intDay++) 
{ 
var cell = tableCal.rows[intWeek].cells[intDay];
if ((intDay == startDay) && (0 == daily)) 
daily = 1; 

if(day==daily) 
//今天，调用今天的Class 
cell.className = "today"; 
else if(intDay==6) 
//周六 
cell.className = "sunday"; 
else if (intDay==0) 
//周日 
cell.className ="satday"; 
else 
//平常 
cell.className="normal";

if ((daily==mm_curday.getDate())&&(parseYear==mm_curday.getYear())&&(mm_curday.getMonth()==document.all.mm_month.selectedIndex)){
cell.className="curday";}
if ((daily > 0) && (daily <= intDaysInMonth)) 
{ 
cell.innerText = daily; 
daily++; 
} 
else 
cell.innerText = ""; 
} 
} 

//这段代码处理鼠标点击的情况 
function getDate() { 
var sDate,_year,_month,_day; 
if ("TD" == event.srcElement.tagName)
	{
	if ("" != event.srcElement.innerText) 
	{ 
	_year = document.all.mm_year.value;
	_month = document.all.mm_month.value;
	_month = (_month.length == 2) ? _month : ('0' + _month);
	_day = event.srcElement.innerText;
	_day = (_day.length == 2) ? _day : ('0' + _day);
	sDate = _year + "-" + _month + "-" + _day; 
	mm_curday = new Date(document.all.mm_year.value,document.all.mm_month.selectedIndex,event.srcElement.innerText);
	m_obj.value=sDate ;
	showhidecalendar('hide','',formName);
	} 
	}
}


//显示和隐藏日历
function showhidecalendar(v,f,frmName){
    formName = frmName;
	m_obj=eval('document.'+frmName+'.elements(f)');
    newCalendar();
    var obj=document.all["Lcal"];
     if (obj.style) { 
			obj=obj.style; 
			v=(v=='show')?'visible':(v='hide')?'hidden':v; 
	}
	//确定日历显示位置
    if((document.body.clientWidth - event.x) < 130)
		obj.left=document.body.clientWidth - 140 + ((document.body.scrollLeft=="undefined")?0:document.body.scrollLeft);
	else
		obj.left=event.x+ ((document.body.scrollLeft=="undefined")?0:document.body.scrollLeft);
    
	if((document.body.clientHeight - event.y) < 130)
		obj.top=document.body.clientHeight - 140 + ((document.body.scrollTop=="undefined")?0:document.body.scrollTop);
	else
		obj.top=event.y + ((document.body.scrollTop=="undefined")?0:document.body.scrollTop);
	obj.visibility=v;
}


//<!---- start of calendar ------>
function writeDIV(){
document.write("<DIV id=Lcal style='height:130 width:130;POSITION: absolute ; TOP: 0px; left:150px ;VISIBILITY: hidden; Z-INDEX: 2'>");
document.write("<TABLE border=0 bgcolor='#cccccc' cellspacing='0' cellpadding='1'><tr><td style='padding-right: 0px; padding-left: 0px;'>");
document.write("<TABLE border=0 bgcolor='#FFFFFF' cellspacing='0' cellpadding='2' width=100% height=100%>");
document.write("<tr align=right bgcolor='#cccccc'><td style='padding-right: 0px; padding-left: 0px;' width=120 height=10></td><td style='padding-right: 0px; padding-left: 0px;' bgcolor='#cccccc' width=10 height=10 style='BACKGROUND-COLOR: lightsteelblue; BORDER-BOTTOM: #000000 1px solid; BORDER-LEFT: #FFFFFF 1px solid; BORDER-RIGHT: #000000 1px solid; BORDER-TOP: #ffffff 1px solid; COLOR: #666699;' align='center'><a onclick=showhidecalendar('hide','',formName)  style='cursor:hand;font-size:7px'><font style='font-family:Webdings'>r</font></a></td></tr>");
document.write("<TR><td style='padding-right: 0px; padding-left: 0px;' colspan=2>");
document.write("<TABLE ID='calendar' cellspacing='0' cellpadding='0' border=0 width=128 style='color:#999900;font-size:12px;font-family:Arial;background:#FFFFFF'> ");
document.write("<THEAD><TR><td style='padding-right: 0px; padding-left: 0px;' COLSPAN=7 ALIGN=CENTER>"); 
document.write("<SELECT ID='mm_month' ONCHANGE='newCalendar()'>");
document.write("<SCRIPT LANGUAGE='JavaScript'> for (var intLoop = 0; intLoop < mm_months.length; intLoop++) ");
document.write("document.write(\"<OPTION VALUE= \" + (intLoop + 1) + \" \" + (mm_today.month == intLoop ? \"Selected\" : \"\") + \">\" +  mm_months[intLoop]);  ");
document.write("</SCRIPT>");
document.write("</SELECT>");

document.write("<SELECT ID='mm_year' ONCHANGE='newCalendar()'>  ");
document.write("<SCRIPT LANGUAGE='JavaScript'> for (var intLoop = mm_today.year-55; intLoop < (mm_today.year + 6); intLoop++) ");
document.write("document.write(\"<OPTION VALUE= \" + intLoop + \" \" + (mm_today.year == intLoop ? \"Selected\" : \"\") + \">\" +  intLoop);  ");
document.write("</SCRIPT>");
document.write("</SELECT>");
document.write("</TD></TR>");
document.write("<TR height=1><td style='padding-right: 0px; padding-left: 0px;' colspan=7 bgcolor='#AABBCC'></TD></TR>");
document.write("<TR CLASS='days'>");
document.write("<SCRIPT LANGUAGE='JavaScript'>  ");
document.write("document.write(\"<td style='padding-right: 0px; padding-left: 0px;' class=satday>\" + mm_days[0] + \"</TD>\");  ");
document.write("for (var intLoop = 1; intLoop < mm_days.length-1; intLoop++) ");
document.write("document.write(\"<td style='padding-right: 0px; padding-left: 0px;'>\" + mm_days[intLoop] + \"</TD>\");  ");
document.write("document.write(\"<td style='padding-right: 0px; padding-left: 0px;' class=sunday>\" + mm_days[intLoop] + \"</TD>\");  ");
document.write("</SCRIPT> </TR>");

document.write("<TR height=1><td style='padding-right: 0px; padding-left: 0px;' colspan=7 bgcolor='#AABBCC'></TD></TR>");
document.write("</THEAD>");
document.write("<TBODY border=1 cellspacing=0 cellpadding=0 ID='dayList' ALIGN=CENTER ONCLICK='getDate()'>  ");
document.write("<SCRIPT LANGUAGE='JavaScript'>  ")
document.write("for (var intWeeks = 0; intWeeks < 6; intWeeks++) { ");
document.write("document.write(\"<TR style='cursor:hand'>\");  ");
document.write("for (var intDays = 0; intDays < mm_days.length; intDays++) ");
document.write("document.write(\"<td style='padding-right: 0px; padding-left: 0px;'>&nbsp;</TD>\");  ");
document.write("document.write(\"</TR>\");  ");
document.write("} ");
document.write("</SCRIPT></TBODY>  ");
document.write("</TABLE></TD></TR>");
document.write("</TABLE></TD></TR></table>");

document.write("</div>");

}
//<!-- end of calendar --->